package org.apache.maven.repository;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
import org.apache.maven.artifact.repository.MavenArtifactRepository;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;

/**
 * Delegating local artifact repository chains the reactor, IDE workspace and user local repository.
 */
@Deprecated
public class DelegatingLocalArtifactRepository extends MavenArtifactRepository {
  private LocalArtifactRepository buildReactor;

  private LocalArtifactRepository ideWorkspace;

  private ArtifactRepository userLocalArtifactRepository;

  public DelegatingLocalArtifactRepository(ArtifactRepository artifactRepository) {
    this.userLocalArtifactRepository = artifactRepository;
  }

  public void setBuildReactor(LocalArtifactRepository localRepository) {
    this.buildReactor = localRepository;
  }

  public void setIdeWorkspace(LocalArtifactRepository localRepository) {
    this.ideWorkspace = localRepository;
  }

  public LocalArtifactRepository getIdeWorspace() {
    return ideWorkspace;
  }

  @Override
  public Artifact find(Artifact artifact) {
    if (!artifact.isRelease() && buildReactor != null) {
      artifact = buildReactor.find(artifact);
    }

    if (!artifact.isResolved() && ideWorkspace != null) {
      artifact = ideWorkspace.find(artifact);
    }

    if (!artifact.isResolved()) {
      artifact = userLocalArtifactRepository.find(artifact);
    }

    return artifact;
  }

  @Override
  public List<String> findVersions(Artifact artifact) {
    Collection<String> versions = new LinkedHashSet<String>();

    if (buildReactor != null) {
      versions.addAll(buildReactor.findVersions(artifact));
    }

    if (ideWorkspace != null) {
      versions.addAll(ideWorkspace.findVersions(artifact));
    }

    versions.addAll(userLocalArtifactRepository.findVersions(artifact));

    return Collections.unmodifiableList(new ArrayList<String>(versions));
  }

  public String pathOfLocalRepositoryMetadata(ArtifactMetadata metadata, ArtifactRepository repository) {
    return userLocalArtifactRepository.pathOfLocalRepositoryMetadata(metadata, repository);
  }

  public String getId() {
    return userLocalArtifactRepository.getId();
  }

  @Override
  public String pathOf(Artifact artifact) {
    return userLocalArtifactRepository.pathOf(artifact);
  }

  @Override
  public String getBasedir() {
    return (userLocalArtifactRepository != null) ? userLocalArtifactRepository.getBasedir() : null;
  }

  @Override
  public ArtifactRepositoryLayout getLayout() {
    return userLocalArtifactRepository.getLayout();
  }

  @Override
  public ArtifactRepositoryPolicy getReleases() {
    return userLocalArtifactRepository.getReleases();
  }

  @Override
  public ArtifactRepositoryPolicy getSnapshots() {
    return userLocalArtifactRepository.getSnapshots();
  }

  @Override
  public String getKey() {
    return userLocalArtifactRepository.getKey();
  }

  @Override
  public String getUrl() {
    return userLocalArtifactRepository.getUrl();
  }

  @Override
  public int hashCode() {
    int hash = 17;
    hash = hash * 31 + (buildReactor == null ? 0 : buildReactor.hashCode());
    hash = hash * 31 + (ideWorkspace == null ? 0 : ideWorkspace.hashCode());
    hash = hash * 31 + (userLocalArtifactRepository == null ? 0 : userLocalArtifactRepository.hashCode());

    return hash;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }

    DelegatingLocalArtifactRepository other = (DelegatingLocalArtifactRepository) obj;

    return eq(buildReactor, other.buildReactor) && eq(ideWorkspace, other.ideWorkspace)
        && eq(userLocalArtifactRepository, other.userLocalArtifactRepository);
  }
}
